Koffing

#51

Base · Common · EN

Community Fair Value · UNLIMITE-NM

$7.22

Market data only

Market anchor (FV_sales)

$7.22

Community estimate

needs 5 more voters

Voters · comps

0 · 7

The band · ±16% of marketCFV $7.22

Floor $6.05Market $7.22Ceiling $8.39

The community moves this only within the glowing band - it can never detach from real market data.

Market anchor $7.227 compsas of 2026-06-29

Est. International

Approx.

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Card details

Card Number51/102 · Common

Card TypeGrass · 50 HP · Basic

Weakness / Resistance / RetreatPsychic ×2 / - / 1

ArtistMitsuhiro Arita

Attack

GrassGrassFoul Gas

Flip a coin. If heads, the Defending Pokémon is now Poisoned; if tails, it is now Confused.

Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.

Graded prices

PSA 10

$517.30

model estimate

PSA 9

$93.80

model estimate

PSA 8.5

$41.50

model estimate

PSA 8

$52.03

inconsistent estimate

PSA 7

$19.17

model estimate

PSA 6

$33.59

inconsistent estimate

PSA 5

$28.00

inconsistent estimate

PSA 4

$17.23

model estimate

PSA 3

$36.00

inconsistent estimate

“model estimate” tiles are Scrydex modeled values (as of 2026-06-29). Struck-through tiles failed our graded data-quality checks and should not be treated as market truth.

Population report

Total graded

2,745

Gem rate (PSA 10)

23.0%

Grade 10

631

Grade 9

1,094

Grade 8.5

Grade 8

548

Grade 7

242

Grade 6

104

Grade 5

Grade 4

Grade 3

Grade 2

Grade 1

auth

PSAcensus for this card's most-graded printing · as of 2026-06-29. Gem rate = grade-10 slabs ÷ total graded.

Market Price History

Market price

$7.36

+$6.66 (+951.4%)

194 data points over 101 days · Source: market data

Near Mint Comparison Prices

FIRSTEDI-DMG

$11.92

FIRSTEDI-HP

Thin data$16.09

FIRSTEDI-LP

$15.67

FIRSTEDI-MP

Thin data$16.34

FIRSTEDI-NM

$33.73

N-NM

$0.18

PSA_10

$200.00

PSA_8

$35.00

PSA_9

$67.50

RH-NM

$0.26

UNLIMITE-DMG

$1.45

UNLIMITE-HP

Thin data$3.63

UNLIMITE-LP

$6.70

UNLIMITE-MP

$3.30

UNLIMITE-NM

$7.22

Price Points

UNLIMITE-NM

Market Price

+951.4%Low confidence$4.91 - $9.53

Source prices are inconsistent across grades/conditions - showing a range while we sort it out. Mid estimate $7.22.

VolatilityHigh Volatility

Most Recent SaleComing soon

Listed MedianComing soon

Current QuantityComing soon

Current SellersComing soon

3 Month Snapshot

Low SaleComing soon

High SaleComing soon

Total SoldComing soon

Avg Daily SoldComing soon

Sale-based and live-listing fields arrive once a realized-sales feed is wired up. Market Price and comparisons above are real Scrydex market data - never realized sales.

Graded price history

Realized graded history accrues daily from eBay sold data - check back soon.

Recent sales

Verified market data - based on 1 realized eBay data point · updated Jun 12, 2026

Average

$35.00

Median

$35.00

Range

$35.00 - $35.00

Data points

PSA 8 · last 90 days

Daily realized medians

latest 1 of 1

Date	Price	Source
Jun 12, 2026	$35.00	eBay realized

Realized rows are daily median snapshots of eBay sold data - not individual auction records.

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Your estimate · UNLIMITE-NM

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Think you can read the market? Guess what this UNLIMITE-NM actually sells for. It's a free forecasting game - score on accuracy, not on moving the price. The more you call, the more your vote counts.

Make a call · UNLIMITE-NM

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Community sentiment

50% bullish

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Sentiment is hype only; it is never blended into the dollar value above.

Should I grade this?

Koffing

Raw market value $7.22Vintage · 1999

HOLD

Hold for now

Hold: PSA's ESTIMATED economics look positive (~$104.57 at 112% ROI), but no realized sales or high-confidence census back the top grade - estimates alone don't justify a submission.

Market leader · liquidity premium

Real censusLow confidenceEst. quality: low

+112% ROI (est.)

Expected value (range)$135 to $261

Expected profit$104.57

Break-even value$93.22

All-in · Regular$86.00

Turnaround~45d (est.)

Expected value is pop-weighted across possible grades - not the top-grade price.

Graded values as of Jun 29, 2026

Outcome range

Best case · top grade

$424.08

PSA 10pop 631

$517.30

estimate

Worst case · low grade

-$51.72

PSA 8pop 548

$41.50

estimate

Inconsistent estimate - awaiting realized solds

Comps look noisy: a lower grade was priced at or above a higher one, so values are clamped to grade order and shown as an approximate range.

PSA 8 ($52.03) priced above PSA 8.5 ($41.50) - ladder violation
PSA 6 ($33.59) priced above PSA 7 ($19.17) - ladder violation
PSA 5 ($28.00) priced above PSA 7 ($19.17) - ladder violation
PSA 3 ($36.00) priced above PSA 4 ($17.23) - ladder violation

Tech / CV grading · digital cert

EstimatedLow confidence

-61% ROI (est.)

Expected value (range)$35 to $69

Expected profit-$81.17

Break-even value$133.22

All-in · TAG Standard$126.00

Turnaround~15d (est.)

Expected value is pop-weighted across possible grades - not the top-grade price.

Graded values as of Jun 29, 2026

Outcome range

Best case · top grade

-$81.17

TAG 9

$52.05

estimate

Worst case · low grade

-$81.17

TAG 9

$52.05

estimate

No live census for this grader, so values are estimated grade odds, shown as a range.

Mid-market · solid demand

EstimatedLow confidenceEst. quality: low

+308% ROI (est.)

Expected value (range)$76 to $147

Expected profit$83.91

Break-even value$27.22

All-in · Bulk$20.00

Turnaround~120d (est.)

Expected value is pop-weighted across possible grades - not the top-grade price.

Graded values as of Jun 29, 2026

Outcome range

Best case · top grade

$139.36

CGC 10

$166.58

estimate

Worst case · low grade

-$1.50

CGC 8

$25.72

estimate

Comps look noisy: a lower grade was priced at or above a higher one, so values are clamped to grade order and shown as an approximate range.

CGC 8.5 ($48.96) priced above CGC 9 ($45.54) - ladder violation
CGC 7 ($29.66) priced above CGC 7.5 ($16.49) - ladder violation
CGC 5.5 ($15.99) priced above CGC 6 ($12.00) - ladder violation
no CGC population census for this card